I have a subscription form I’m embedding in my website via iFrame to add subscribers to my email list. I have a custom domain and sender that works fine for email campaigns. My company name is updated on the profile as well as its website. (The domain is authenticated via DNS which I did with the cloudflare login)
However, when the form sends the double confirmation email, it is sent from something like bounces-270637702-=gmail.com@ha.d.sender-sib.com or my email @270637702.t-sender-sib.com . How can I get it to use my custom domain account, or at least stop it from including my personal email in the from field?